package cn.th.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

/**
 * 处理跨域问题
 */
@Configuration
public class MyCorsConfig {

    @Bean
    public CorsFilter corsFilter(){
        //1.添加CORs配置信息
        CorsConfiguration config = new CorsConfiguration( );
        //1)允许的域,不要写*，否则cookie就无洼使用了
        config. addAllowedOrigin("http://localhost:9527" );//这里填写请求的前端服务器1
        // 2)是否发送Cookie信息
        config.setAllowCredentials(true) ;
        //3）允许的请求方式
        config.addAllowedMethod( "OPTIONS");
        config.addAllowedMethod("HEAD");
        config.addAllowedMethod("GET");
        config .addAllowedMethod ("PUT");
        config.addAllowedMethod( "POST");
        config.addAllowedMethod( "DELETE");
        config.addAllowedMethod ( "PATCH");
        // 4）允许的头信息.
        config.addAllowedHeader("*");
        //2.添加映射路径，我们拦截一切请求
        UrlBasedCorsConfigurationSource configSource = new UrlBasedCorsConfigurationSource();
        configSource.registerCorsConfiguration("/**", config);
        //3.返回新的CorsFilter.
        return new CorsFilter(configSource) ;

    }
}
